The four people in the SUV were arrested and taken to a hospital for treatment of moderate injuries. They were then taken to Pasadena jail and are each being held on $1 million bail. Their arraignment was slated for Thursday morning.

The two people killed in the minivan were 25-year-old Tracey Noelle Ong Tan, of Glendale, and her 11-year-old cousin, Kenric Ng, of Daly City, coroner’s Lt. Larry Dietz said. Three other passengers were injured and taken to hospitals in serious condition. All those riding in the minivan were members of the same family, four of whom were visiting from Northern California for the holiday.

“We have an innocent family that was going about their business on a special day at a special time of year,” said Pasadena police Chief Philip Sanchez. “We have a driver of a suspect vehicle that, at least preliminarily, is culpable for his action.”

Investigators are still looking into whether the pursuit and fatal crash was connected to a shooting earlier in the day, in which one man was killed and critically wounded. The SUV appeared to have been driving away from a six-square-block area of Northwest Pasadena that had been cordoned off by police during the shooting investigation.

The SUV may match the description of one of the vehicles sought in connection with the shootings, police said.